thank you for prompt replay
I used ‘mang board’ which is Korean board.
Mangboard used different prefix for DB. so free version cannot cover it.
Because updraft free version backup for only core db.
So I tried again after I paid for updraft.
but there is one more problem.
I requested to costermize the board and db for some special fuction.
I don’t know the reason.
but when I try to make a clone and try to make back up and restore, all my trying was fail.
the fuction didn’t be included.
thank you for your concern!!
maybe I have to request to hosting company for move or make a clone.